Means for electric-arc welding, cutting, and the like



C. J. HOLSLAG.

MEANS FOR ELECTRIC ARC WELDING, CU TT|NG, AND lHt LIKE. APPLICATION FILED N0v,1e.1920.

1,371,094, Patented Mar. s, 1921,

HWENTOR mini"??? A TTORNEY thence back to the source of ener vention to a three-phase rent, and work, as

. CLAUDE J'. HOLSLAG, OF SOUTH ORANGE, NEW JERSEY.

MEWS FOR ELECTRIC-ARC WELDING, CUTTH QG, AND THE LIKE.

To aZ Zwkom it may concern:

'Be it known that I, CLAUDE J. HoLsLAG, a citizen of the United States, residing at South Orange, in the county of Essex, State of New Jerse have invented certain new and useful Yin rovements in Means for Electric -Arc elding, Cutting, and the like, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

This invention relates to improved means of electric arc welding, cutting and the like.

According to the resent invention, the welding, cutting or li e operation is effected by means of two or more series connected arcs, the electric path beingthrough an electrode to the work to be welded or cut and through another electrode or another series of electrodes and work.

The invention also consists in a twin or multiple electrode having two or more electrodes arranged adj acently to, but insulated from, each other, and intended to produce at least two closely adjacent arcs having a common puddle.

, The invention methods of connections and relative arrange,- ments between the electrodes, supply of curereinafter more particularly referred to.-

In the dra'win Figure 1 is a tfiigrammatic view showing my multiple electrode in o eration.

' igs. 2, 3 and 4 show iflerent ways of binding the electrodes together.

vention to a three-phase delta line.

Figs. 6 and 7 illustrate different ways of holdinga triple multiple electrode together.

Fig. 8 illustrates the application of my instar line.

Fig. 9 illustrates the application of my invention -to a three-phase four wiresystem.

Fig. 10 illustrates my invention as applied to a four wiretwo-phase line, there. being provided in this case four electrodes.

Fig. 11 shows the application of my invenfion to a two-phase three wire line.

Figs. 12, 13, 14: and 15 show different groupings of electrodes of which, my invention is susceptible. n

Fig. 16 is a diagrammatic View showing how the. electrode may be connected to a transformer of the Holslag type with the Specification of Letters Patent. Application filed November 16, 1920. Serial No.

further consists in the Patented Mar. 8, 1921.

Fig. 17 is a diagrammatic View disclosing the behavior of the series connected arcs when they are close to one another.

eferring to Fig. 1, the two component metal electrodes a and b of a twin electrode are connected by means of wires attached thereto, to the two poles of a transformer, as shown in Fig. 16., e. 9., the transformer described in my Patents 1305362 and 1305363 granted to me June 3, 1919, and a twin are A B is drawn between the said component electrodes and the work 0, at the joint between the pieces of metal, the two adjacent arcs A and B being thus in series with each other, and their com-' bined heat eifect which welding is in Figs. 1 and 9 Fig. 8, the electrodes are placed at the joint to be welded or at the juncture of the two pieces of metal to be joined together,and as the electrodes the arcs they melt into the joint to be welded. The fact that in the arrangement just referred to, two arcs are produced instead of one, which latter is the case with the two electrodes in 'Jablochofis candle, is proved by the voltage drop across the two electrodes being equal to that oftwo arcs; furthermore visual inspection shows'that there are two arcs as is shown in Figs. 17 which repel one another, and-attempts made to cause the two arcs to merge into one end in fail: ure while the arcs are in striking distance 01' the work. Fig. 5 illustrates the application of the in- The two electrodes a, b ofthe twin electrode may be joined or held together in any suitable way and the insulating and holding bond (2 used for this purpose may inclose the component electrodes wholly as shown in Fig. 2 or partly, as shown in Figs. 3 and 4, being made more or less thin,.or more or less thick aceordin to requirements. The

are consumed by the heat of.

insulating and hol 'ng bond may he made of the same materials as the flux coatin described in my patent filed June 11,1918, or e replaced by a spacer or other mechanical means.

Figs. 5 and 8 illustrate the application of the invention to a three-phase delta and a star line respectively; in these cases use may be made of amultiple electrode comprisin three com to the corners of the delta (see application 239,447

nent electrodes ab e connecte ,t vely'and during use one electrode may be arranged t advance in front of the other, more especially when a conical or other depression D is formed between the parts to be welded together, in which case the electrode which is ahead of the other two is used for filling the deeper part of the depression.

. It is to be pointed out that in this case three separate arcs A, B, E are formed between the multiple electrode and the work.

In the application of the invention to a three-phase fourwire system, the middle point of the star may be connected to the work, and the three free ends thereof to the three electrodes of a multiple electrode, as

shown in Fig. 9.

In the'case of a two-phase current supply, use may be made of a multiple electrode with four component electrodes, as shown Fig. 10, two of the electrodes. a and I) being connected to the one phase and the other two, e and f to the other phase, and in the case of a two-phase three-wire line, a three-electrode multiple electrode may be used as shown in F1g. 11, the electrode I) connected to the middle wire being made of larger section than the other two a, and e, as it carries a larger current. In all cases where alternating current is used, it has been foundthat due to the use of a series multiple arc electrode that the power factor has been materially increased thus materially increasing the efliciency ofthe welding system.

I wish it to be understood that the invention is not limitedto any particular grouping of the electrodes, as they may be arranged according to any desired design, and that during operations instead of their being advanced abreast, they may be advanced one ahead of the other in order successfully to realize the welding of beads by once passing the multiple electrode over the work.

Further, the invention is not limited to the number of component electrodes employed. For instance, use ma be made of a six-electrode multiple electro e, the six electrodes of which may be arranged in one and g the same plane (see Fig. 13) or be grouped *m the form of a triangular prism (see ig 4) or otherwise, and be used in conjunction -ith a three-phase four-wire system in which ase the middle point f a star connection may be connected to three of the electrodes and the free ends of the star to the other three adjacent electrodes, the latter bein arranged ormer, as shown in Figs. 12 and 15 respectively.

-arcs,the arcs however still being in series relation with one another.

By the means provided according to this invention the workabilit is approximately doubled, the electrical e ciency and power factor are increased and the use of alternating currents is especially applicable because of the equal burning away of the electrodes.

I wish it to be understood that the invention is not limited to the arrangements of electrodes and connections herein'before more particularly referred to and that any ar rangement of two or more electrodes producing two or more series connected arcs, comes within the scope of my invention.

Having now particularly described and' ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1- 1. A method of metallic arc welding which consists in striking a plurality of series connected arcs between the electrodes and the metal to be welded, on the metal to be welded, melting the electrodes into the joints,

said arcs being maintained at the joints of the metal to be welded.

2. The improved method of metallic are welding which consists in simultaneously striking a plurality of series connected arcs between the electrodes and the metal to be welded, on the metal to be welded, melting the electrodes into the joints, said arcs being maintained at the joints of the metal to be welded. a

3. A method of metallic arc welding which consists in striking a plurality of arcs by means of electrodes connected to opposite terminals of a source of supply on the metal to be welded and connecting the plurality of electrodes and work in series with one another through said arcs, melting the electrodes into the joints, said arcs being maintained at the joints of the metal to be welded.-

4. A method of metallic arc welding which consists in striking a plurality of closely adjacent series connected arcs adjacent to the joint of the metal to be welded, the heating effect of the arcs producing a puddle common to all the arcs.

5. The improved method of metallic electric arc welding which consists in simulta neously striking a plurality of'closely ad jacent series connected arcs between electrodes and the metal to be welded, substantially at the joint between the pieces of metal to be welded, and melting said electrodes into the joint.

-6. The method of metallic arc welding which consists in striking a plurality of" alternating current series connected arcs on the work to be welded.

7. The method of metallic arc welding arc weldi r operations, being consumed at which consists in striking a plurality of substantially the same rate as the electrodes. alternating current series connected arcs on 10. A multiple electrode for electric arc the work to be welded, the heating effect of welding cutting or the like comprising a plu 5 the arcs forming a common puddle. rality of electrodes bound together and ar- 8. A mult'ple electrode for'carrying out ranged in difierent planes.

the process 0 electric arc welding compris- 11.' A multiple electrode for are weldin ing a plurality of electrodes and an insulatcutting and the like operations in which the ing flux producing binding material joining separate electrodes are made of unequal sec- 10 sald electrodes.- ,tions, all of the electrodes beingbound to- 9. A multiple electrode for carrying out gether and the electrode or electrodes of I the process of electric arc welding comprislarger sections being intended to carry larger ing a plurality of electrodes and an insulatcurrents than the others. ing flux producing binding material joining In testimony whereof, I aflix n8 nature 15 said electrodes, said binding material under CLAUDE J. H L AG. 

